Harsh parenting and adolescent aggression: Adolescents' effortful control as the mediator and parental warmth as the moderator.

Although researchers have examined the potential contribution of harsh parenting to child aggression, they have rarely explored how one parent's harsh discipline could interact with warmth by another parent to affect child aggression. We sought to clarify whether the impact of harsh parenting by one parent on child effortful control could be buffered by warmth of the other parent, further reducing the likelihood of child aggression. 867 adolescents were chosen from two public middle schools situated in Jinan, the provincial city in Northern China. Data were gathered with adolescents reporting effortful control, their parents reporting harsh parenting, and their classmates nominating aggressive peers. A moderated mediation model was used to test the mediating and moderating hypotheses. Results indicated that adolescent effortful control partially mediated the relation of harsh fathering to adolescent aggression and completely mediated the relation of harsh mothering to adolescent aggression. Moreover, harsh fathering was only negatively associated with effortful control among adolescents with low maternal warmth and harsh mothering was only negatively associated with effortful control among adolescents with low paternal warmth, thus lowering the risk for aggression. The main conclusion is that harsh parenting by one parent could only indirectly impact on adolescent aggression via the mediator of effortful control only for adolescents with low warmth by the other parent. Our findings add to extant understandings on how different parenting practices by both parents may interact to influence children's aggressive behaviors.